Genetically engineered mouse models (GEMMs) of human cancer; tumor-immune interactions; promoting inter-disciplinary and inter-institutional collaboration in cancer research
Tyler Jacks is an American cancer biologist and the David H. Koch Professor of Biology at the Massachusetts Institute of Technology (MIT). He is the founding director of MIT's David H. Koch Institute for Integrative Cancer Research and its successor, the Koch Institute, from 2001 to 2021. Jacks was a Howard Hughes Medical Institute investigator from 1994 to 2021, when he became president of Break Through Cancer. His research is best known for the development and analysis of genetically engineered mouse models (GEMMS), a foundational contribution to modern cancer biology that has helped shape how scientists study tumor initiation, progression, and the treatment response across every major cancer type.
Jacks joined the MIT faculty as assistant professor in 1992, was promoted to associate professor with tenure in 1997, and full professor in 2000. He served as director of the MIT Center for Cancer Research and its successor, the Koch Institute for Integrative Cancer Research, from 2001 to 2021. The Koch Institute brought together cancer scientists and cancer-oriented engineers into a highly collaborative, multidisciplinary environment. Jacks was a Howard Hughes Medical Institute investigator from 1994 to 2021.
In 2021, Jacks became president of Break Through Cancer, a cancer research foundation created to support collaborative, multi-institutional research teams focused on difficult-to-treat cancers. The organization brings together researchers from five leading cancer institutions — Dana-Farber Cancer Institute, Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Memorial Sloan Kettering Cancer Center, The University of Texas MD Anderson Cancer Center, and the Koch Institute for Integrative Cancer Research at MIT — using a model centered on shared data, shared materials, coordinated project management, and research designed to move discoveries into clinical settings more quickly. Break Through Cancer describes its approach as “radical collaboration,” emphasizing coordination across institutions, disciplines, clinical strategy, and translational research.
Jacks is a member of the board of directors of Amgen and Thermo Fisher Scientific. and Aveo Pharmaceuticals Inc. He co-founded Dragonfly Therapeutics in 2015 and serves as chair of its scientific advisory board; he co-founded T2Biosystems in 2006 and Novello Therapeutics in 2026. He serves on the scientific advisory board of Skyhawk Therapeutics. He served previously on the scientific advisory boards of SQZ Biotech (until 2023) and Aveo Pharmaceuticals.
Jacks served on the Harvard University Board of Overseers from 2019 to 2025, including as vice chair of the board’s executive committee for the 2024–25 academic year. He is also a member of the scientific advisory board of The Francis Crick Institute (London).
Research
Jacks' most significant scientific contribution is the development of a series of genetically engineered mouse models (GEMMS) of human cancer. These models — which carry targeted mutations in genes such as p53, Rb, Nf1, and K-ras — were among the first to closely recapitulate how human tumors initiate and progress, and are now foundational tools used across the field of cancer biology. His laboratory has used GEMMs to study tumor suppressor genes, oncogenes, DNA repair pathways, tumor evolution, treatment response, and mechanisms of drug resistance. Mouse models of more than nine cancer types have been produced, including lung, pancreatic, ovarian, colorectal, brain, and soft-tissue cancers.
In more recent years, the lab has moved into the area of tumor immunology, using mouse models to understand how the immune system recognizes and responds to, and how tumors evade, immune surveillance. The lab has also adopted organoid systems to accelerate model development in tissue culture and upon orthotopic transplantation.
Awards and recognitions
1997: AACRRhoads Award for outstanding Achievement in Cancer Research.
2013: Elected Fellow of the AACR Academy (inaugural class).
2015: Sergio Lombroso Award in Cancer Research.
2015: MIT James R. Killian Jr. Faculty Achievement Award—the highest honor the MIT faculty can bestow on one of its members.
2020: AACR Princess Takamatsu Memorial Lectureship.
2025: American-Italian Cancer Foundation Award for Excellence in Medicine.
2026: American Cancer Society Medal of Honor—the organization’s highest scientific recognition, awarded for his pioneering work on genetically engineered mouse models of human cancer.
Burger ML, Cruz AM, Crossland GE, Gaglia G, Ritch CC, Blatt SE, Bhutkar A, Canner D, Kienka T, Tavana SZ, Barandiaran AL, Garmilla A, Schenkel JM, Hillman M, de Los Rios Kobara I, Li A, Jaeger AM, Hwang WL, Westcott PMK, Manos MP, Holovatska MM, Hodi FS, Regev A, Santagata S, Jacks T. 2021. Antigen dominance hierarchies shape TCF1 + progenitor CD8 T cell phenotypes in tumors. Cell 184(19):4996-5014.
Freed-Pastor WA, Lambert LJ, Ely ZA, Pattada NB, Bhutkar A, Eng G, Mercer KL, Garcia AP, Lin L, Rideout WM 3rd, Hwang WL, Schenkel JM, Jaeger AM, Bronson RT, Westcott PMK, Hether TD, Divakar P, Reeves JW, Deshpande V, Delorey T, Phillips D, Yilmaz OH, Regev A, Jacks T. 2021. The CD155/TIGIT axis promotes and maintains immune evasion in neoantigen-expressing pancreatic cancer. Cancer Cell 39(10):1342-1360.e14.
Yang D, Jones MG, Naranjo S, Rideout WM 3rd, Min KHJ, Ho R, Wu W, Replogle JM, Page JL, Quinn JJ, Horns F, Qiu X, Chen MZ, Freed-Pastor WA, McGinnis CS, Patterson DM, Gartner ZJ, Chow ED, Bivona TG, Chan MM, Yosef N, Jacks T, Weissman JS. 2022. Lineage tracing reveals the phylodynamics, plasticity, and paths of tumor evolution. Cell. May 26;185(11):1905-1923.e25.
Jaeger AM, Stopfer LE, Ahn R, Sanders EA, Sandel DA, Freed-Pastor WA, Rideout WM 3rd, Naranjo S, Fessenden T, Nguyen KB, Winter PS, Kohn RE, Westcott PMK, Schenkel JM, Shanahan SL, Shalek AK, Spranger S, White FM, Jacks T. 2022. Deciphering the immunopeptidome in vivo reveals new tumour antigens.Nature. Jul;607(7917):149-155.
Ely ZA, Mathey-Andrews N, Naranjo S, Gould SI, Mercer KL, Newby GA, Cabana CM, Rideout WM 3rd, Jaramillo GC, Khirallah JM, Holland K, Randolph PB, Freed-Pastor WA, Davis JR, Kulstad Z, Westcott PMK, Lin L, Anzalone AV, Horton BL, Pattada NB, Shanahan SL, Ye Z, Spranger S, Xu Q, Sánchez-Rivera FJ, Liu DR, Jacks T. 2023. A prime editor mouse to model a broad spectrum of somatic mutations in vivo. Nat Biotechnol. May 11. doi: 10.1038/s41587-023-01783-y.
Westcott PMK, Muyas F, Hauck H, Smith O, Sacks N, Ely Z, Jaeger A, Rideout III W, Zhang D, Bhutkar A, Beytagh M, Canner D, Jaramillo G, Bronson R, Naranjo S, Jin A, Patten JJ, Cruz A, Shanahan SL, Cortes-Ciriano I, Jacks, T. 2023. Mismatch repair deficiency is not sufficient to elicit tumor immunogenicity. Nat Genetics Sept 14; doi: 10.1038/s41588-023-01499-4.
Ely ZA, Kulstad ZJ, Gunaydin G, Addepalli S, Verzani EK, Casarrubios M, Clauser KR, Wang X, Lippincott IE, Louvet C, Schmitt T, Kapner KS, Agus MP, Hennessey CJ, Cleary JM, Hadrup SR, Klaeger S, Su J, Jaeger AM, Wolpin BM, Raghavan S, Smith EL, Greenberg PD, Aguirre AJ, Abelin JG, Carr SA, Jacks T, Freed-Pastor WA. 2025. Pancreatic cancer-restricted cryptic antigens are targets for T cell recognition. Science. May 8;388(6747):eadk3487. doi: 10.1126/science.adk3487. Epub 2025 May 8.